An adaptive localization method for real-time security analysis

Author

Ejebe, G.C. ; Paliza, R.F. ; Tinney, W.F.

Author_Institution

Empros Syst. Int., Minneapolis, MN, USA

Volume

7

Issue

2

fYear

1992

fDate

5/1/1992 12:00:00 AM

Firstpage

777

Lastpage

783

Abstract

The authors present a new adaptive localization method for fast real-time AC security analysis using a modification of the fast decoupled power flow algorithm. On each iteration, a localized region is adaptively identified as the set of buses whose mismatches exceed specified tolerances. The sparse mismatch vectors for these buses are then efficiently processed by sparse vector methods to solve the significant bus voltage magnitude and angle corrections required for security analysis. Reactive power limits on generators are enforced and all other appropriate automatic control adjustments are performed for the localized solutions. Test results on two practical systems show CPU time improvements over full AC solutions ranging from 3:1 to 5:1

Keywords

iterative methods; load flow; power system analysis computing; reactive power; real-time systems; AC; adaptive localization method; angle corrections; bus voltage magnitude; buses; fast decoupled power flow algorithm; generators; iteration; power system analysis computing; reactive power; real-time security analysis; sparse mismatch vectors; Algorithm design and analysis; Automatic generation control; Load flow; Performance analysis; Performance evaluation; Power generation; Power system security; Reactive power control; Real time systems; Voltage;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.141785

Filename

141785